Lock with tumbler-safety-slides

ABSTRACT

A lock with tumbler-safety-slides and a locking block equipped with entrance openings for the locking teeth of the slides, which comprises a locking block and a key having a plurality of bit steps. Safety-slides have locking teeth, and the locking block is displaceable in dependency upon a complementary bit step of the key crosswise to the locking teeth of the safety-slides.

United States Patent Brugemann 1 Apr. 4, 1972 [54] LOCK WITH TUMBLER-SAFETY- 1,829,596 10/1931 Lality ..70/3s2 SLIDES 3,060,716 10/1962 Butter ....70/ 134 [72] Inventor: Hans Brugemann, Eichenstrasse 16, 562 F REIGN PATENTS OR APPLICATIONS Germany 1,128,461 9/1968 Great Britain ..70/352 [22] Filed: May 15, 1970 Primary Examiner-Robert L. Wolfe PP 37,701 Attorney-Ernest G. Montague 52 us. c1 ..70/252, 70/377 [57] ABSTRACT [5 1] Int. Cl. ..E05b 21/00 A lock with tumbler-safety-slides and a locking block [58] Field of Search ..70/338, 341, 343, 348, 349, equipped with entrance openings for the locking teeth of the 70/358, 351, 352, 353, 354, 355 376.377 slides, which comprises a locking block and a key having a plurality of bit steps. Safety-slides have locking teeth, and the [56] Rehrences Cited locking block is displaceable in dependency upon a complementary bit step of the key crosswise to the locking teeth of the safety-slides.

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I mvmron. raw; 5 By q M 2 i LOCK WITH TUMBLER-SAFETY-SLIDES The present invention relates to a lock with tumbler-safetyslides, in general, and with a locking block equipped with entrance openings for the locking teeth of the slides, in particular, which locking block can comprise also individual locking plates and whereby to each locking tooth sitting preferably on the tumbler-safety-slide an individual entrance opening disposed corresponding to the complementary bit step of the key is coordinated to each locking plate and in the locking block, respectively. The corresponding design brings first of all in connection with the obtainable locking combinations and the opening safety of the lock a very advantageous structure.

It is one object of the present invention to provide a lock with tumbler-safety-slides to adjust corresponding locks in a simple manner to a multi-key-function in particular to the use of main key-arrangements or central lock devices.

It is another object of the present invention to provide a lock with tumbler-safety-slides, wherein the locking block is displaceable in dependency upon a complementary bit step of the key crosswise to the locking teeth of the safety slides.

Due to this formation, a lock is created, which with maintenance of the essential advantages of the particular design in addition permits the insert of main key-arrangements or central-lock arrangements. The locking block can be divided into individual zones, which are equipped with engagement openings for the locking teeth disposed in dependency from the corresponding lock combination of the key. If a group key is used, the latter has a bit step adjusted to the cross displacement of the locking block. During closing with the group key the locking block is displaced crosswise and only thereafter can the locking teeth which are correspondingly divided in accordance with the lock combination, enter the corresponding engagement openings of the block. Upon use of a general master key again an additional still larger cross displacement of the locking block can occur, by example, so that another zone of the locking block becomes effective, which upon use of the group key remains without function. In accordance with the principle of the present invention, advantageously also central locks can be provided. The total solution has still the essential advantage that it is impossible, contrary to the solution available in cylinder locks, by filing off of the individual key to perform the closing of the superposed key. In the design in accordance with the present invention the group key has always a bit step, which does not enter a closing function at all in the individual key.

An advantageous embodiment resides in accordance with the present invention in an arrangement according to which an additional slide is provided which is coupled with the locking block, and is controlled by an additional locking plate. Due to this arrangement are the control means organically aligned into the total structure of the tumbler-safety-slide lock, which control means cause the corresponding bit step of the key to provide the cross displacement of the block.

In order to serve the lock only at particular times also by a second, other key, in accordance with the present invention, a control, serviceable from the outside, is provided for the displacement of the block. A constructively advantageous design resides thereby in accordance with the present invention in an arrangement, according to which, the control comprises a nut mounted in the lock, which nut engages the slide moving the block with a control finger. Furthermore, it is still favorable in accordance with the present invention to coordinate to the nut two snappers shaped in a resting position.

Due to this formation, a lock is created, which with maintenance of the essential advantages of the formation of this type can be changed to the mentioned manner of function. By example, a visitor of a fair and a hotel guest, respectively, obtains the key corresponding to his room, which does not cause a cross displacement of the locking block having two zones. Upon operation the lock with the fair key and the guest key, respectively, the locking teeth are coupled in dependency from the corresponding combination thereof with the engagement opening of the one zone of the locking zone. The hotel operator who rents the rooms has, however, the possibility to open the lock likewise with his superior key, which has an adjusted bit step causing the cross displacement of the locking block. During closing with a hotel operator key, the locking block is crosswise displaced and only thereafter enter the locking teeth complementary to the locking combination into the corresponding entrance openings of the other zone of the locking block. In connection with these locking possibilities, for example, during the fair time period, the control for the displacement of the locking block serviceable from the outside is not operated. The switching nut rests effectively in one end position.

Upon termination of the fair time period, the nut is brought from the outside into the other resting end position by means of a simple service handling, which nut displaces thereby the locking block by means of the control finger over the slot. An improper opening of the lock with a false guest key is now impossible, since during an attempted closing the locking teeth find the locking block displaced and the closing process is impossible. The closing with the hotel operator key is further possible, in spite of the fact that the bit step of the key displacing crosswise the block remains without effect, since the locking block has been displaced already crosswise by the control finger of the switching nut.

In the above-mentioned formations, it is not possible to obtain predetermined closing functions, which require, by example, that only the change and the first tour with the key causing the cross displacement of the locking block and the second tour can be closed with the key causing no cross displacement.

In an advantageous further development of the present invention, it is furthermore proposed therefore, that the locking block has a control pin, which engages a slot of the bolt, the slot consisting of individual following sections and is adjusted to the closing function. It is thereby favorable for the present invention, if the control pin sits within the range of the rear guide portion of the locking block.

Due to this formation a lock is created, which can be set up in an advantageous manner to the most different closing functions. Since the control pin of the locking block enters the slot of the bolt, which slot comprises individual following sections, the closing can be performed only with the key and guides the block and thereby the control pin corresponding with the formation of the slot. Thus, closing functions, as by example, partner-forced-function, chief-division-manager function and chief-personal-function be chosen merely by providing the bolt with the correspondingly formed control slot. In case of the partner-forced-function, the key of the one partner closes the change and the first tour, while the second tour can be closed only by the key of the other partner.

The chief-division-manager function provides, by example, that with the chief-key the change, the first and second tour is closed, while the division-manager key operates the change and the first tour. In case of the chief-personal-function, the chief-key closes the change, the first and the second tour and with the personal-key only the change can be operated. The arrangement of the control pin is in the range of the rearward guide wedge, bringing about the advantage of a greater stability of the control pin. In case of using a false key, not adjusted to the closing function, the control pin offers an effective resistance against the forces occurring during this operation.

With these and other objects in view, which will become apparent in the following detailed description, the present invention, which is disclosed by example only, will be clearly understood in connection with the accompanying drawings, in which:

FIG. 1 is a side elevation of the lock designed in accordance with the present invention, the lock cover being removed;

FIG. 2 is a section along the lines 11-" of FIG. 1;

FIG. 3 is a section along the lines III-III of FIG. 1;

FIG. 4 is a fragmentary side elevation as shown in FIG. 1 with inserted individual key rotated for FIG. 5 is a section along the lines V-V of FIG. 4;

FIG. 6 is a side elevation similar to that shown in FIG. 4, however, with the inserted group key turned for 180;

FIG. 7 is a section along the lines VII-VII of FIG. 6;

FIG. 8 is a side elevation of a second embodiment of the lock designed in accordance with the present invention, the lock cover being partly broken away;

FIG. 9 is a section along the lines IXIX of FIG. 8;

FIG. 10 is a section along the lines X-X of FIG. 8;

FIG. 11 is a fragmentary side elevation, as shown in FIG. 8, with inserted guest key turned for 180;

FIG. 12 is a section along the lines XIIXII of FIG. 1 1;

FIG. 13 is again a side elevation, similar to that of FIG. 11, yet with inserted hotel operator key turned for 180;

FIG. 14 is a section along the lines XIV-XIV of FIG. 13;

FIG. 15 is a side elevation of a third embodiment of the lock of the present invention in which the lock cover is partly broken away;

FIG. 16 is a secton along the lines XVI-XVI of FIG. 15;

FIG. 17 is a plan view, shown at an enlarged scale of the lock guard of the lock set;

FIG. 18 is a section along the lines XVIII-XVIII of FIG. 17;

FIG. 19 is a section along the lines XIX-XIX of FIG. 17;

FIG. 20 is a plan view similar to that shown in FIG. 18, however, with inserted key turned for 180, which key has the bit step causing the cross displacement of the locking block;

FIG. 21 is a section along the lines XXIXXI of FIG. 20;

FIG. 22 is a plan view, similar to that of FIG. 17, with inserted key turned for l80, which does not cause a cross displacement of the locking block;

FIG. 23 is a section along the lines XXIII-XXIII of FIG. 22;

FIG. 24 is a graphic showing of the control slot according to the partner-force-function;

FIG. 25 is a graphic showing of the control slot according to the chief-division-manager function; and

FIG. 26 is a graphic showing of the control slot according to the chief-personal-function.

Referring now to the drawings, and in particular to FIGS. I-7, the lock designed in accordance with the present invention comprises a lock sheet 1, a face plate 2 and the lock cover 3, which covers with its angularly-shaped ends 4, and 6 the lock guard of the lock set.

A bolt 7 is operated by a driver 8 sitting on a key bushing 8, which driver also operates the lock tumbler plate 9, the locking nose 9 of which enters in corresponding recesses 7 of the bolt 7 and thus blocks the bolt 7.

Closing plates are mounted above the tumbler plate 9, whereby the lowermost disposed closing plate 10 is provided as additional closing plate 10'. The lock tumbler plate 9, the additional closing plate 10 and the closing plates 10 disposed thereabove, have slots 11, into which standing bolts 12 disposed rigidly in the lock box enter for the purpose of guidance. Spiral springs 13 and 14 sit on a square bolt of which the spring 13 of the tumbler plate 9 and the other spring 14 are coordinated to all closing plates.

The closing plate 10 and the additional closing plate 10' run into an inclination 16, which engages with a corresponding inclination of the tumbler-safety-slide 17 and the slide 18 disposed therebelow. The tumbler-safety-slide 17, as well as the slide 18 are mounted and guided by a bolt 19 disposed in the lock box. A continuous engagement of the inclination of the tumbler-safety-slides, as well as of the slide 18 and also of the additional closing plate 10' is obtained by springs 20.

The slide 18 has a driver 21 which enters into a groove 22 of the locking block 23 having two zones 2 and 2,. The zone Z has by example, the entrance bores 24 for the locking teeth 26 to be arranged correspondingly by an individual key 25 and sitting on the tumbler-safety-slides 17, while during use of the main key 27, the locking teeth 26 enter the entrance bores 28 of the zone Z of the locking block 23, after the latter has been displaced crosswise in dependency from a corresponding bit step 27' of the main key 27. To this cross displaceablility in the direction of the arrow X (FIG. 6) serves a screw 29 disposed on the lock tumbler 9, which screw 29 guides itself in a longitudinal slot 30 of the locking block 23. Furthermore, the locking block 23 has still an additional guide wedge 32 entering into a groove 31 of the lock tumbler 9. The locking block 23 is engaged by a rotary spring 33.

The operation of the lock described above is as follows:

During closing with the individual key 25 into the lock corresponding, by example, to a main key arrangement, the individual key 25 is inserted into the key bushing 8. The driver 8' sitting on the key bushing 8 operates the bolt 7 and the lock tumbler 9. Corresponding with the step-up of the bit steps 25', the closing plates 10 are lifted to various heights (FIG. 5) and thereby, as a result of the inclination 16, the tumbler-safetyslides 17 are correspondingly displaced variously in the direction towards the face plate 2. After this arrangement of the tumbler-safety-slides 17, the driver 8 upon further turning moves the locking block 23 upwardly into a high position, and the locking teeth 26 enter into the specially arranged entrance openings 24 of the zone Z of the locking block 23 coordinated thereto (FIG. 4). After the closing is perfonned, since the entering of the locking teeth 26 into the openings 24 permits the lock tumbler 9 to be raised sufficiently so that its locking nose 9 is released out of the recesses 7 of the bolt 7 thereby permitting the bolt 7 to be freed for movement caused by further turning of the key which cooperates with the lower projections on the bolt 7, the closing plates 10 and the tumbler-safety-slides 17 return to the original position. During the closing process with the individual key 25, the additional closing plate 10 is not lifted, since the bit step 25" is correspondingly recessed so as to pass freely about the edge of the plate 10'.

During closing with the main key 27, which has the bit differently arranged steps 27" of the key and a bit step 27 formed to lifting the additional closing plate 10', all closing plates are also variously lifted and thereby, the tumbler-safetyslides 17, as well as the slide 18 are variously displaced. The movement of the slide 18 causes with its driver 21 which always extends into the locking block 23, a cross displacement of the locking block 23. Likewise, in accordance with this arrangement of the tumbler-safety-slides 17 the driver 8 moves the locking block 23 upwardly in a high position, so that the locking teeth 26 enter now into the correspondingly entrance openings 28 of the zone Z of the locking block 23 coordinated thereto and the closing process can be performed, since again the locking teeth 26 entering into the openings 24 permits the lock tumbler 9 to be raised sufficiently so that its locking nose 9' is released out of the recesses 7' of the bolt 7 thereby permitting the bolt 7 to be freed for movement caused by further turning of the key which cooperates with the lower projections on the bolt 7.

The latch bolt 34 can be withdrawn by means of the key with the intermediate arrangement of the divided change lever 35 and 36. The locking teeth 26 are formed in the shape of inserted steel pins. The possibility exists to provide the pins on the block 23 and the corresponding entrance openings 24 and 28 on the tumbler-safety-slides 17.

The displacement of the block does not have to take place in form of a displacement in lateral direction, rather can also be arranged, by example, by rotary displacement of an about segment shape block.

Referring now again to the drawings, and in particular to FIGS. 8-14, the lock sheet 101 comprises the face plate 102 and the lock cover 103, which covers with its angular ends 104, 105 and 106 the lock guard of the lock set.

The bolt 107 is operated by a driver 108' sitting on the key bushing 108, which driver 108' switches also the lock tumbler plate 109, the locking nose 190 of which enters in corresponding recesses 107' of the bolt 107 and thereby blocks the bolt.

Closing plates 110 are mounted above the tumbler plate 109, whereby the lowermost disposed closing plate 110 is provided as an additional closing plate 110'. The lock tumbler plate 109, the additional closing plate 110, as well as the closing plates 110 disposed thereabove have slots 11, into which standing bolts 112 rigidly secured in the lock box enter for the purpose of guidance. Spiral springs 113 and 114 sit on a square bolt 115, of which the spring 113 of the tumbler plate 109 and the other spring 114 is coordinated to all closing plates.

The closing plates 110 and the additional closing plate 110' terminate above into an inclination 116, which is in engagement with the corresponding inclination of the tumbler-safetyslides 117 and the slide 118 disposed therebelow. The tumbler-safety-slides 117 as well as the slide 118 are mounted and guided by means of a bolt 119 disposed in the lock box. A continuous engagement of the inclination of the tumbler-safetyslides 117, as well as of the slide 118 against the inclination 116 of the closing plates 110 and also of the additional closing plate 110' is obtained by springs 120.

The slide 118 has a driver 121, which enters into a groove 122 of the locking block 123 which has two zones Z, and Z The zone Z has, for example, the entrance bores 124 for the locking teeth 126 to be arranged accordingly by the guest key 125 and sitting on the tumbler-safety-slides 117, while during operation of the lock with the hotel operator key 127, the locking teeth 126 enter into the entrance openings 128 of the zone 2 of the locking block 123, after the latter has been displaced crosswise in dependency from a corresponding bit step 127' of the hotel operator key 127. A screw 129 disposed on the lock tumbler 109 serves this crosswise displaceability, which screw 129 guides itself in a longitudinal slot 130 of the locking block 123. Furthermore, the locking block 123 has an additional guide wedge 132 entering a groove 131 of the lock tumbler 109. The locking block 123 is spring-biased by a rotary spring 133.

The control displacing the block 123 from the outside comprises substantially a nut 134, which is mounted above the tumbler-safety-slides 117, as well as of the slide 118 in the lock sheet 101 and in the lock cover 103. A control finger 135 rigidly secured to the nut 134 and disposed at the same height of the slides 118, extends into the range of a recess 1 18' of the slide 118. A wing 137 is formed furthermore with the nut 134, the latter having a triangular opening 136, which wing 137 receives in a bore 138 a ball 140 biased by a spring 139 and causing two end rest positions. The entrance openings 141 and 142 are coordinated to this ball rest in the lock sheet 101.

The latch bolt 143 can be withdrawn by means of the key with the intermediate arrangement of the divided change lever 144 and 145.

The operation of the lock disclosed above is as follows:

The key 125 is handed over to the guest and the nut 134 is brought into the position shown in F I0. 11 by the hotel operator from particular handling means. The control finger 135 does not cause also a cross displacement of the block 123. During closing with the key 125, the latter is put into the key bushing 108. The driver 108' sitting on the key bushing 108 operates the bolt 107 and the lock tumbler 109. Corresponding to the stepping-up of the bit steps 125' are the closing plates 1 lifted and thereby the tumbler-safety-slides 1 17 displaced in direction towards the face plate 102. In accordance with this arrangement of the tumbler-safety-slides 117, the driver 108 controls the locking block 123 in a high position, so that each locking tooth 126 enters into the corresponding special entrance opening 124 of the zone 2 of the locking block 123. Upon performed closing the closing plates 110 and the tumbler-safety-slides 117 return into the original position. During the closing process with the guest key 125, the additional closing plate 110' is not lifted, since the bit step 125" is correspondingly designed.

The operator has the possibility, if necessary, with his superior key 127 which has the bit step 127" and a bit step 127 raising the additional closing plate 110, likewise to open the lock. All closing plates are lifted thereby during closing and thus the tumbler-safety-slides 117, as well as the slide 118 are displaced. The slide 1 18 causes with its driver 121 a cross displacement of a block 123. Likewise, in accordance with this arrangement of the tumbler-safety-slides 117, the driver 108' controls the locking block 123 in a high position, so that the locking teeth 126 now enter into the entrance openings 128 of the zone Z, of the locking block coordinated thereto and the closing process can be further continued. After release of the guest key 125, the switching nut 134 is brought into a position shown in FIG. 13. Due to the control finger is the slide 118 and the locking block 123 coupled therewith, crosswise displaced. A closing of the lock with the operator key 127 is further possible, as is shown in FIGS. 13 and 14. The bit step 127 remains, however, now without function and does not cause any cross displacement of the locking block 123, since the latter has been already crosswise displaced by the switching nut 134.

An attempted, not permissible, opening of the lock with a copied guest key is not possible, since during the attempted closing, locking teeth 126 find the locking block 123 displaced and the closing process is rendered impossible. The locking teeth 126 are formed in the embodiment given by example in an advantageous manner as steel wire pins.

The switch nut 134 can be formed under circumstances in the manner of assembly safety means in order to obtain a spe cial key operation. The control for displacement of the locking block 123 serviceable from the outside can also serve for the modulation of a panic function of the lock, such that the displacement takes place from the outside into a position in which the locking teeth 126 disposed at series can enter a slot of the locking block 123.

Referring now again to the drawings, and in particular to FIGS. 15-26, the lock comprises a lock sheet 201, a face plate 202 and a lock cover 203 which covers with its angular ends the lock guard of the lock set. The bolt 207 is operated by a driver 208' sitting on a key bushing 208, which driver 208' switches also the lock tumbler plate 209, the lock nose 209 of which enters in corresponding recesses 207' of the bolt 207 and thus blocks the bolt 207.

Closing plates 210 are mounted above the tumbler plate 209, the lowermost of the closing plates 210 being provided as additional closing plate 210. The lock tumbler plate 209, the additional closing plate 210' as well as the closing plates 210 disposed thereabove, have slots 211, into which standing bolts 212 rigidly secured in the lock box enter for the purpose of guidance. The spiral springs 213 and 214 sit on a square bolt 215, of which the spring 213 of the tumbler plate 209 and the other spring 214 are coordinated to all closing plates.

The closing plates 210 and the closing plate 210 terminate above into an inclination 216, which is an engagement with a complementary inclination of the tumbler-safety-slide 217 and the slide 218 disposed below thereof. The tumbler-safetyslides 217, as well as the slide 218 are mounted and guided by means of bolts 219 provided in the lock box. A continuous engagement of the inclination of the tumbler-safety-slide 217 as well as of the slide 218 against the inclination 216 of the closing plates 210 and also of the additional closing plate 210 is brought about by springs 220,

The slide 218 has a driver 221, which enters a groove 222 of the locking block 223 having two zones Z, and 2 The zone 2 has, by example, the entrance bores 224 for the locking teeth 226 correspondingly arranged by a key 225 and sitting on the tumbler-safety-slides 217. The median bit step 225" of the key 225 is designed such, that the median bit step 225" does not cause any cross displacement of the locking block 223. Upon use of another key 227, the locking teeth 226 enter the entrance bores 228 of the zone 2, of the locking block 223, after the latter has been displaced in dependency from a corresponding bit step 227 of the key 227. To this crosswise displaceability in the direction of the arrow x serves a screw 229 disposed on the lock tumbler 209, which screw guides itself in a longitudinal slot 230 of the locking block 223. Furthermore, the locking block 223 engaged by a rotary spring 233 has in addition a guide wedge 232 entering into a groove 231 of the lock tumbler 209.

Within the range of the rearward guide wedge 232 of the locking block 223 sits a control pin 237, which engages the slot 247 of the bolt 207, which slot 247 is adjusted to the closing function and comprises individual sections 238-246 following each other. The slot 247 shown in FIGS. -23 concerns the partner-force-function.

The latch bolt 234 can be withdrawn by means of the key 225 and 227, respectively, with the intermediate arrangement of the divided change lever 235 and 236.

The operation of the lock is as follows:

During closing of the lock set up in FIGS. 15-23 to a partner-force-function with the key 227, which has the bit steps 227" and raising the additional closing plate 210, all closing plates are lifted and thereby, the tumbler-safety-slides 217 as well as the slide 218 are displaced. This arrangement causes with its driver 221 a cross displacement of the locking block 223. In accordance with this arrangement, the driver 208' controls the locking block 223 over the lock tumbler 209 in a high position, so that the locking teeth 226 enter now into the entrance openings 228 of the zone Z, of the locking block 223, whereby the locking teeth 226 are coordinated to the entrance openings 228, and the change or the first tour can be closed. During this movement operation of the locking block 223, the control pin 237 guides itself in the sections 238, 239 and 240 of the slot 247 in case of a change operation, while during closing of the first tour, the control pin 237 guides itself in the sections 238, 239, 241, 242 and 243 of the slot 247.

The second tour can be closed only with the key 225 of the other partner. Corresponding with the stepping-up of the bit steps 225, the closing plates 210 are lifted and thereby the tumbler-safety-slides 217 are displaced towards the sheeting 202. After this arrangement of the safety slides 217, the driver 208 controls the locking block 223 in a high position, so that the locking teeth 226 enter into the entrance openings 224 of the zone Z of the locking block 223, the entrance 224 being coordinated to the locking teeth 226.

The second tour can now be closed. During closing with the key 225 a cross displacement of the locking block 223 occurs, since the bit step 225" is designed accordingly. During the closing process of the second tour the control slot 237 guides itself forcibly in the sections 244, 245 and 246 of the slot 247.

In accordance with the graphic showing of the partnerforce-function in FIG. 24, the function movement of the control pin 237 controlled by the key 227 of the one partner is as follows:

Closing of the change: Closing of the l. tour:

manager-function in FIG. 25, the function movement of the control pin 237 controlled by the chief key 227 is as follows:

Closing of the change: a-b-c-d, Closing of the l. tour: a-b f Closing of the 2. tour: g-f-e- L-k-J,

The key 225 of the division-manager can, however, cause only the following function movement:

Closing of the change: Closing of the l. tour:

In the chief-personal-function shown in FIG. 26, the chief key 25 controls the control pin as follows:

Closing of the change: a-m-n, Closing of the l. tour: a-m-e-f, Closing of the 2. tour: f-e-i-k.

The personal key 27 causes, however, only the following function movement:

Closing of the change; a-b-c-d.

Displaceability of the block can be provided also such, that a multi-edge block is rotated, so that always different edges of the locking teeth point thereto.

The displacement of the block can be performed in addition to the described solutions also by a time clock, in order to obtain preferably in tresor door locks, that predetermined keys close only at predetermined times of the day. The displacement can furthermore take place by electro-magnetic control with remote operation.

While I have disclosed several embodiments of the present invention, it is to be understood that these embodiments are given by example only and not in a limiting sense.

I claim:

1. A lock, comprising a plurality of parallel arranged closing plates each mounted for displacable movement in a first direction and adapted to be moved by the step bits of a key, respectively,

a plurality of parallel arranged tumbler safety slides mounted for sliding displacement in a second direction cross-wise to said first direction and mounted slidable, respectively, by said closing plates, respectively, upon movement of the latter,

a lock bolt slidable substantially in said second direction and adapted to be moved by said key,

a lock tumbler plate slidable substantially in said first direction by said key and cooperatively including means for preventing said lock bolt from movement when said lock tumbler plate is in a rest position,

a locking block mounted on said lock tumbler plate for joint movement substantially in said first direction,

a locking tooth provided on each of said tumbler safety slides and facing substantially in said first direction toward said locking block, and

said locking block formed with an entrance bore for each of said locking teeth.

2. A lock, comprising a plurality of tumbler safety slides each tooth,

a locking block having an entrance bore for each of said locking teeth,

said locking block being displaceably mounted operatively dependent upon a bit step of a key cross-wise to said locking teeth of said safety slides,

an additional slide,

a closing plate controlling the movement of said additional slide, and

said additional slide is disposed below said tumbler safety slides and coupled with said locking block.

3. A comprising a plurality of tumbler safety slides each having a locking tooth,

a locking block having an entrance bore for each of said locking teeth,

said locking block being displaceably mounted operatively dependent upon a bit step of a key cross-wise to said locking teeth of said safety slides, and

a control means operable from the outside for displacement of said locking block.

4. The lock, as set forth in claim 3, wherein said control means comprises a hinge mounted in said lock,

and

said hinge has a control finger for engagement with said slide moving said block.

5. The lock, as set forth in claim 4, which includes two snap-like catching limiting means coordinated to said hinge.

6. A lock comprising a plurality of tumbler safety slides each having a locking tooth,

a locking block having an entrance bore for each of said locking teeth,

having a locking said locking block being displaceably mounted operatively dependent upon a bit step of a key cross-wise to said locking teeth of said safety slides,

said locking block has a control pin, and

a bolt, a slot of which comprises individual sections following each other, and

said control pin enters said slot.

7. The lock, as set forth in claim 6, wherein said locking block has a rear guide wedge, and said control pin sits within the range of said guide wedge.

8. The lock as set forth in claim 1, wherein said locking block further being mounted on said locking block for relative movement thereto in said second direction.

9. The lock as set forth in claim 8, further comprising an additional slide mounted for movement parallel to that of said tumbler safety slides and controlled in its movement by one of said closing plates and including a driver cooperatively engaging said locking block for joint movement in said second direction.

10. The lock as set forth in claim 1, wherein said locking block has two entrance bores for each of said teeth. 

1. A lock, comprising a plurality of parallel arranged closing plates each mounted for displacable movement in a first direction and adapted to be moved by the step bits of a key, respectively, a plurality of parallel arranged tumbler safety slides mounted for sliding displacement in a second direction cross-wise to said first direction and mounted slidable, respectively, by sAid closing plates, respectively, upon movement of the latter, a lock bolt slidable substantially in said second direction and adapted to be moved by said key, a lock tumbler plate slidable substantially in said first direction by said key and cooperatively including means for preventing said lock bolt from movement when said lock tumbler plate is in a rest position, a locking block mounted on said lock tumbler plate for joint movement substantially in said first direction, a locking tooth provided on each of said tumbler safety slides and facing substantially in said first direction toward said locking block, and said locking block formed with an entrance bore for each of said locking teeth.
 2. A lock, comprising a plurality of tumbler safety slides each having a locking tooth, a locking block having an entrance bore for each of said locking teeth, said locking block being displaceably mounted operatively dependent upon a bit step of a key cross-wise to said locking teeth of said safety slides, an additional slide, a closing plate controlling the movement of said additional slide, and said additional slide is disposed below said tumbler safety slides and coupled with said locking block.
 3. A comprising a plurality of tumbler safety slides each having a locking tooth, a locking block having an entrance bore for each of said locking teeth, said locking block being displaceably mounted operatively dependent upon a bit step of a key cross-wise to said locking teeth of said safety slides, and a control means operable from the outside for displacement of said locking block.
 4. The lock, as set forth in claim 3, wherein said control means comprises a hinge mounted in said lock, and said hinge has a control finger for engagement with said slide moving said block.
 5. The lock, as set forth in claim 4, which includes two snap-like catching limiting means coordinated to said hinge.
 6. A lock comprising a plurality of tumbler safety slides each having a locking tooth, a locking block having an entrance bore for each of said locking teeth, said locking block being displaceably mounted operatively dependent upon a bit step of a key cross-wise to said locking teeth of said safety slides, said locking block has a control pin, and a bolt, a slot of which comprises individual sections following each other, and said control pin enters said slot.
 7. The lock, as set forth in claim 6, wherein said locking block has a rear guide wedge, and said control pin sits within the range of said guide wedge.
 8. The lock as set forth in claim 1, wherein said locking block further being mounted on said locking block for relative movement thereto in said second direction.
 9. The lock as set forth in claim 8, further comprising an additional slide mounted for movement parallel to that of said tumbler safety slides and controlled in its movement by one of said closing plates and including a driver cooperatively engaging said locking block for joint movement in said second direction.
 10. The lock as set forth in claim 1, wherein said locking block has two entrance bores for each of said teeth. 